We know God gives faith because it is described as a gift in scripture, specifically through the work of the Holy Spirit.
In Ephesians 2:8-9, we are reminded that grace is received through faith, and that faith itself is not of our own doing but is a gift from God. This aligns with what Jesus expressed in the Gospels regarding faith as a small yet powerful seed, indicating that it is God who cultivates faith within His people. Furthermore, in Titus 1:1, Paul refers to the 'faith of God's elect,' emphasizing that faith is not something we manufacture but rather a sovereign endowment from God resulting from the new birth. This affirms the biblical teaching that men are spiritually dead and incapable of producing faith independently.
Scripture References:
Ephesians 2:8-9, Titus 1:1, John 6:29, John 6:44, Ephesians 2:8, Romans 10:17, Job 13:15
Commentary